Slideshow: Katy Perry at House of Blues Katy Perry brought her debut headlining tour, "Hello Katy" -- and her larger-than-life stage-prop cat, Katy Purry -- to Boston's House of Blues. Highlights: a pussy joke, a period joke, a watermelon with the word "penis" on it, and a bunch of other certified borscht-belt blue humor that left the pre-teens in the audience cackling, and their moms looking horrified . . . that is, when said MILFs weren't losing their shit to "Hot and Cold."

Slideshow: Katy Perry at House of Blues Katy Perry brought her debut headlining tour, "Hello Katy" -- and her larger-than-life stage-prop cat, Katy Purry -- to Boston's House of Blues. Highlights: a pussy joke, a period joke, a watermelon with the word "penis" on it, and a bunch of other certified borscht-belt blue humor that left the pre-teens in the audience cackling, and their moms looking horrified . . . that is, when said MILFs weren't losing their shit to "Hot and Cold."

Love's life Three hours late, Courtney Love stormed into the Ames Hotel on Court Street a week ago Wednesday, faced a small group of radio-station contest winners, and explained that her tardiness was the result of a mid-day romp in the sack with an ex-boyfriend who's now a professor at Harvard University.

Of Montreal exposed "I've always been drawn to a density of ideas," states Kevin Barnes, plaintively.

Chris Cornell | Songbook Chris Cornell's reaction to the critical lynching his Timbaland-produced debacle Scream took in 2009 was to grow his hair back out, reunite with Soundgarden (currently in the studio), and embark on a solo tour stripped down to just an acoustic guitar.

Dr. Dog | Be the Void With Be the Void , their sonically raw sixth album, these Philly psych-pop oddballs have pulled a fussy, self-conscious about-face, indulging in their weirdest ideas in years.